Plastic bowl Master Cylinder!!!!!!!!!!!!!

Brakes for your Classic Mopar

  1. kt340sport

    kt340sport Well-Known Member

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    I installed a new cast master cylinder on my 73 dart sport last summer , and cannot keep it from surface rusting , steady cleaning it off .How many are using the plastic type cylinders , and what to use when going from 2 bolt to 4 bolt .Pics would be greatly appreciated .Thanks alot.
     
  2. 1968dartman

    1968dartman life is getting better!!

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    There are adapters to go from 4 bolt to two bolt master cylinders. seen it done and it is not that big a job
     
  3. mrdodge69

    mrdodge69 Well-Known Member

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    Just added the adapter on mine with a Wilwood master. I used to paint my cast one's so they would not rust. Or if you want to keep the cast looking finish, apply a coat of clear to it.
     
  4. mrdodge69

    mrdodge69 Well-Known Member

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    Not sure if you can see the adapter, but got it right from my local Mopar dealer.
     

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  5. Bad Sport

    Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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    That's what I do, painted mine satin black using Rustoleum paint.
     
  6. 74scamp360

    74scamp360 Junior Member

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    i've got the 4 to 2 bolt adapter on my scamp, took a couple pics of it, crappy cell phone pics so sorry they arent the greatest but gives you the idea, its just a plate with 4 holes in it to bolt to the stock 4 and has 2 studs in it to convert to the 2 bolt
     

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  7. Dartnut

    Dartnut Don't hate me because i'm beautiful

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    So, what year/application of master cylinder would work best?
    I'm having the same problem.
     
  8. Jeffs73

    Jeffs73 Well-Known Member

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    Sorry to hijack this thread but has anyone used one of these newer style master cylinders with manual all 4 drum brakes?
     
  9. kt340sport

    kt340sport Well-Known Member

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    Thanks guys , i think i am going this way .And if i take it off , might a well change it rather than try and paint or clear , plus trying to get rid of the fluid to paint would be time , so i will have a new one ready to go on .
     
  10. kt340sport

    kt340sport Well-Known Member

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    I am thinking F body Volare Aspen .Like to have black bowl though
     
  11. scuba0331

    scuba0331 Well-Known Member

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    Dr. Diff offers a Master Cylinder and Adapter in one package. I wish I would have bought that!

    http://www.doctordiff.com/brakes/

    I bought a new M/C made in the USA and painted in with POR 15 prior to installation.
     
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    • mrdodge69

      mrdodge69 Well-Known Member

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      Me too... the Wilwood is Nice but for what you get I should have went the other way.
       
    • needsaresto

      needsaresto Well-Known Member

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      An M body master might work..
       
    • kt340sport

      kt340sport Well-Known Member

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      The willwood is nice but , the engine compartment of my 340 is very stock looking .
       
    • 1968dartman

      1968dartman life is getting better!!

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      You are looking at doing what I plan for this winter. However I am putting on disc brakes, replacing all lines as well and going to dot 5 fluid at the same time.
       
    • Motopsycho

      Motopsycho 69 Darts Rule

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      dodge truck new
       

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    • mrdodge69

      mrdodge69 Well-Known Member

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      What is the Bore size on those new master's?
       
    • 71Scamper

      71Scamper Mopar runs thru my veins!

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    • adriver

      adriver Blazing Apostle

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      If he changes, does anybody have a source for a late model aluminum master cylinder to brake rod dust boot?
      I know I saw one, but can't find it again.

      http://4secondsflat.com/AR Engineering.htm
      AR Engineering offers two master cylinder adapters in order to match the most common configurations. These adapters are designed to mate the later model aluminum master cylinder which started to appear in the 1978 model year and was gradually phased into production. There are at least 3 different bore diameters used in RWD vehicles with the 1 1/32 diameter being the most popular. The light trucks used the same design but with a 1 1/8 diameter bore. Mopar Performance also sells complete aluminum master cylinders in two different bore sizes. We are partial to the unit used in the 1985 5th Avenue cars, but most any RWD master cylinder should work. Stay away from the master cylinders used on FWD vehicles. They look the same as the RWD master cylinders but many were designed for diagonal braking systems and may be calibrated wrong for your musclecar.
       
    • Locomotion

      Locomotion Well-Known Member

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      I forgot what year, but they have rebuilt aluminum master cylinders for power as well as manual disc brakes for Aspens/Volares. They don't come with the plastic reservoir, but they are easy enough to get from a junk yard. The plastic tanks are molded specifically for the application (small tapered/medium/large. Aspen/Volare are medium, but I got some large ones from trucks/vans for the extra capacity to use on my race car. All you have to do is cut off a tang or two on the bottom that interferes with the installation. I don't care for the smaller m/c or their small tapered resevoirs. Many are FWD and may not work correctly.
       
    • Dart Sport 360

      Dart Sport 360 Wanna Race?

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      I'm hopefully going to bring this thread back to life......

      I want to change my master this winter to a plastic one with screw on lids. I hate my leaking old POS and its bubbled the paint on the inner fender and hood. I plan on repairing the paint and swapping the master.

      My questions are...
      1. Will the same adapter plate work for both power and manual brakes?

      2. Does anyone have a part number or something to track down and buy one of these masters. Besides the bolt pattern, does all the linkage/plunger work the same?

      My car has power brakes and I want to keep the same booster. I'll make my own adapter if its just a plate with some holes....

      I'm going to look into the wilwood one as well. Is that a standard master cylinder for all makes or is it a replacement for mopars only.

      Thanks Guys!
       
    • no poseur

      no poseur Well-Known Member

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      the adapter will work for power or manual, the only difference between the two is the depth of the plunger power is deeper then manual.
       
    • mopardrt

      mopardrt Well-Known Member

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    • qkcuda

      qkcuda Well-Known Member

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      Darcy
      I had the exact same issues. I talked to Cass (Dr Diff) and his setup is hard to beat. I ended up finding the adapter and master at Mancicis when I was in Carlisle. I haven't installed it yet, it's one of my winter projects.
      Dave
       
    • Dart Sport 360

      Dart Sport 360 Wanna Race?

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      Thanks for the link to the Dr Diff kit, I didn't see it as clearly as I should have in the above posts... That looks like the way to go for sure and pretty reasonable. I should have looked into this before Monster Mopar, I might have been able to pick a kit up while I was down there and saved some shipping.

      Am I correct that my 75 dart will have the 15/16" bore?
       
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